Water-heating apparatus



(No Model.)

W. MA LTBY 8: J. D. WALLACE. WATER HEATING APPARATUS No. 437,495.Patented Sept. 30. 1890.

7 an L Aepaiwmzaiq vwewtow UNITED STATES PATENT ()EFICE.

W'ARREN MALTBY AND JOSEPH D. WALLACE, OF CHAMPAIGN, ILLINOIS.

WATER-HEATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 437,495, datedSeptember 30, 1890.

Application filed April 30, 1890- Serial No. 350,057. (No model.)

To all whom it may concern.-

Be it known that we, WARREN MALTBY and J OSEPH D. WALLACE, citizens ofthe United States of America, residing at Ohampaign, in the county ofChampaign and State of Illinois, have invented certain new and usefulImprovements in ater-Heating Apparatus; and we do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same,referencebeinghad to the accompanying drawings,and to letters of reference marked zhereon, which form a part of thisspecificaion.

This invention relates to certain new and useful improvements inwater-heating apparatus.

The object of the invention is to provide a water-heating device orboiler which will be mainly made up of tubes and couplings,which are soarranged as to line the sides, rear, and

top of the fire-chamber, the parts being constructed and combinedsubstantially as shown, and as will be hereinafter fully set forth.

In the accompanying drawings, Figure 1 is a perspective view; Fig. 2, aside elevation, and Fig. 3 a rear elevation.

A refers to the base-casting, which consists of two side pieces A and arear end piece A the side castings being attached to the rear casting inany suitable manner, or formed of a single piece, if desired. The sidepieces are provided with internally-sorew-threaded openings at and theend piece with a similar opening a, to which the supply or blow-offpipes may be joined. The base-casting A is provided at its upper portionwith a series of internally-screw-threaded openings 1) for the receptionof the vertical side pipes B and rear end pipes B. The vertical sidepipes B are each provided with elbows c c, ,to which are attached shortsections of pipes D, which are connected to central T-joint-s E, in thevertical members of which are secured the lower ends of vertical pipesF, the upper ends of said pipes being secured to a casting G, which hasinternally-screw-threaded openings therefor, and nearits ends openings 9for the 1 reception of circulating-pipes h h, as shown. The upper or topcasting G at its rear end has a transverse member, on the under side Bto the portion A of the casting A.

By this construction we provide a furnace which has rear, side, and topwalls or tubes and intermediate projecting pipes over the grate, whichconnect directly with the upper and lower castings, and the castingthrough which the supply passes is located centrally above the grate. Inthis manner the full benefit of the heat is obtained, and the majorportion of the furnace is made up of straight pipes and elbows.

We are aware that prior to our invention it has been proposed to providea furnace made up of a hollow base, pipes connecting the same to anupper casting, and pipes which project above the grate; and we do notthere fore wish to be understood as broadly claiming the same. We arealso aware of the construction disclosed in the patent of Kelsey, No.417,325, dated December 17, 1889, and that of Mouat,No. 408,249, datedAugust 6, 1889. Our invention will be readily distinguished from theconstructions alluded to, in that we form a construction entirely madeup of tubes and bends, wherein the construction lines the incasingportion at the sides and rear, the

pipes K L being located to receive the efiective action of the heat, andample space arranged above the same to permit the heat to act on the topportions of the structure. The construction, moreover, is exceedinglycheap, and all the pipes are easily accessible for the purpose ofreplacing or tightening the same.

Having thus described our invention, we claini- 1. In a water-heatingapparatus, a casting A, comprising side section A and end section A eachhaving at its upper edge a series of screw-threaded openings, verticalpipes B and B, secured at their lower ends to said sections of thecasting, the pipes B having elbows c, transverse connecting-pipes D, andT-couplings E, for the reception of central vertical pipes F, which areconnected to the central longitudinal casting G, pipes B connectingcasting G to pipes K and L, which form a return-bend and connect withcasting A by short vertical pipes B, the parts being organizedsubstantially as shown, and for the purpose set forth.

2. In a water-heating apparatus, the surrounding casing containing acasting A, consisting of side pieces A and rear transverse portionAhaving openings a a and a for connecting thereto supply-pipes, a seriesof vertical pipes connected to said base and communicating centrallyover the grate by means of transverse pipes and couplings with verticalpipes and a central longitudinal casting, said central longitudinalcasting having a transverse end member, a series of intermediate pipeshaving return-bends connecting the casting G with the rear portion A ofthe base A, and egress-openings g in the upper casting G, the partsbeing combined and or ganized substantially as shown, and for thepurpose set forth.

In testimony whereof we aflix our signatures in presence of twoWitnesses.

WARREN MALTBY. JOSEPH D. WALLACE. Witnesses:

F. D. RUGG, GEO. F. BEARDSLEY.

